PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-14:42:50
G01     113.5          21.8               10.9 +/-    0.82      22.9 +/-    0.82  0.030 / 0.030
G07     94.9           63.1               10.4 +/-    0.90      11.5 +/-    0.90  0.030 / 0.030
G08     42.9           25.9                8.9 +/-    0.63      17.1 +/-    0.63  0.120 / 0.180
G09     175.2          18.7               11.0 +/-    1.04      25.1 +/-    1.04  0.120 / 0.210
G11     97.9           41.9               10.2 +/-    0.97      14.4 +/-    0.97  0.050 / 0.100
G13     314.2          24.3                8.2 +/-    1.74      16.4 +/-    1.74  0.040 / 0.090
G17     203.6          30.5               11.4 +/-    2.89      19.7 +/-    2.89  0.030 / 0.040
G18     87.4           22.9                7.8 +/-    1.36      16.1 +/-    1.36  0.040 / 0.040
G28     304.5          59.4                9.1 +/-    0.86      10.4 +/-    0.86  0.060 / 0.070
G30     358.4          73.4                9.9 +/-    1.16      10.3 +/-    1.16  0.060 / 0.060