PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-22:12:50
G01     89.6           32.0               11.8 +/-    0.88      19.9 +/-    0.88  0.150 / 0.210
G07     125.9          45.5               12.7 +/-    0.67      16.9 +/-    0.67  0.110 / 0.290
G08     42.7           11.1                9.0 +/-    1.71      24.7 +/-    1.71  0.090 / 0.110
G11     70.4           40.9               10.4 +/-    0.75      14.9 +/-    0.75  0.090 / 0.110
G13     294.5          35.8               12.1 +/-    2.89      19.0 +/-    2.89  0.050 / 0.150
G17     215.6          50.2               14.4 +/-    1.10      18.1 +/-    1.10  0.070 / 0.140
G18     63.8           24.0                9.4 +/-    1.05      18.7 +/-    1.05  0.030 / 0.040
G19     214.9          27.2               14.9 +/-    1.49      27.8 +/-    1.49  0.040 / 0.050
G28     351.3          61.7               10.1 +/-    0.48      11.3 +/-    0.48  0.040 / 0.050
G30     109.5          73.1               12.1 +/-    0.44      12.6 +/-    0.44  0.050 / 0.050