PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-14:13:10
G01     124.6          13.6               10.5 +/-    2.31      27.0 +/-    2.31  0.040 / 0.030
G07     61.8           69.1                9.0 +/-    0.44       9.6 +/-    0.44  0.030 / 0.040
G08     48.3           37.0                7.9 +/-    0.36      12.1 +/-    0.36  0.140 / 0.320
G09     176.8          31.6               11.6 +/-    0.89      19.7 +/-    0.89  0.160 / 0.390
G11     114.5          37.0               10.5 +/-    1.00      16.0 +/-    1.00  0.050 / 0.100
G13     320.2          14.2                5.1 +/-    1.31      12.8 +/-    1.31  0.050 / 0.110
G17     200.5          17.4                9.0 +/-    1.59      21.2 +/-    1.59  0.020 / 0.040
G18     100.7          18.1                9.6 +/-    1.06      22.2 +/-    1.06  0.030 / 0.040
G28     281.1          54.4                9.7 +/-    0.93      11.7 +/-    0.93  0.040 / 0.060
G30     335.9          62.7                9.2 +/-    0.47      10.2 +/-    0.47  0.040 / 0.060