PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-14:42:50
G01     102.4          27.8               12.4 +/-    1.11      22.8 +/-    1.11  0.030 / 0.030
G07     113.4          54.8               11.6 +/-    0.47      13.8 +/-    0.47  0.030 / 0.030
G08     41.7           16.1                8.8 +/-    2.06      21.2 +/-    2.06  0.080 / 0.140
G11     82.0           42.4               10.8 +/-    1.37      15.1 +/-    1.37  0.070 / 0.110
G13     305.7          31.4                9.0 +/-    1.95      15.3 +/-    1.95  0.080 / 0.100
G17     207.9          42.2               12.0 +/-    0.99      16.9 +/-    0.99  0.050 / 0.090
G18     75.1           24.6               10.2 +/-    0.81      20.1 +/-    0.81  0.040 / 0.060
G19     210.8          14.6                6.7 +/-   15.75      16.7 +/-   15.75  0.030 / 0.050
G28     326.9          61.6                9.3 +/-    1.02      10.4 +/-    1.02  0.070 / 0.060
G30     43.3           79.8               11.4 +/-    0.38      11.5 +/-    0.38  0.060 / 0.060