PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-15:12:50
G01     112.9          22.2               11.3 +/-    1.19      23.5 +/-    1.19  0.050 / 0.040
G07     96.1           62.7               10.5 +/-    0.54      11.7 +/-    0.54  0.030 / 0.040
G08     42.9           25.7                9.3 +/-    0.83      17.9 +/-    0.83  0.030 / 0.030
G09     175.2          18.2                9.5 +/-    2.17      21.8 +/-    2.17  0.030 / 0.030
G11     97.3           42.1               11.3 +/-    0.43      15.9 +/-    0.43  0.120 / 0.220
G13     313.8          24.7                9.3 +/-    2.39      18.3 +/-    2.39  0.110 / 0.220
G17     203.9          30.8                9.0 +/-    1.67      15.5 +/-    1.67  0.080 / 0.220
G18     86.8           23.1                8.2 +/-    0.73      16.8 +/-    0.73  0.080 / 0.230
G28     305.8          59.6                8.4 +/-    0.74       9.6 +/-    0.74  0.040 / 0.080
G30     0.6            74.0               10.0 +/-    0.79      10.4 +/-    0.79  0.050 / 0.080