PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-14:28:00
G01     84.2           32.8                7.9 +/-   39.93      13.0 +/-   39.93  0.030 / 0.030
G07     129.8          41.1                9.1 +/-   41.46      13.0 +/-   41.46  0.020 / 0.030
G11     62.6           37.0                7.0 +/-   38.62      10.8 +/-   38.62  0.060 / 0.130
G13     288.4          37.4                7.1 +/-   40.06      10.8 +/-   40.06  0.070 / 0.110
G15     313.9          10.3              -10.9 +/-   10.97     -30.1 +/-   10.97  0.070 / 0.100
G17     218.6          58.9                9.6 +/-   41.99      11.0 +/-   41.99  0.070 / 0.090
G18     58.5           22.4                6.8 +/-   42.84      14.0 +/-   42.84  0.040 / 0.050
G19     217.2          28.7                4.9 +/-   10.09       8.8 +/-   10.09  0.040 / 0.070
G28     358.6          61.3                4.7 +/-    2.34       5.3 +/-    2.34  0.050 / 0.070
G30     117.1          73.3                6.2 +/-    1.90       6.5 +/-    1.90  0.050 / 0.070