PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-13:43:00
G01     112.9          22.2                8.1 +/-    2.20      16.8 +/-    2.20  0.030 / 0.020
G07     96.2           62.6                9.7 +/-    0.80      10.8 +/-    0.80  0.030 / 0.020
G08     42.6           24.8                8.0 +/-    1.47      15.7 +/-    1.47  0.030 / 0.030
G09     174.8          17.7                7.9 +/-    1.94      18.4 +/-    1.94  0.030 / 0.030
G11     96.5           42.0                8.7 +/-    0.62      12.2 +/-    0.62  0.090 / 0.120
G13     313.8          24.8                5.5 +/-    0.64      10.7 +/-    0.64  0.090 / 0.140
G17     203.5          31.8                8.1 +/-    1.66      13.7 +/-    1.66  0.140 / 0.160
G18     86.6           23.0                6.2 +/-    1.93      12.7 +/-    1.93  0.070 / 0.190
G28     305.6          59.6                6.6 +/-    1.11       7.5 +/-    1.11  0.090 / 0.150
G30     358.7          73.6                8.8 +/-    0.54       9.1 +/-    0.54  0.110 / 0.140