PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-13:57:40
G01     124.5          13.7                8.9 +/-    1.74      22.8 +/-    1.74  0.030 / 0.030
G07     62.3           69.0                8.4 +/-    0.69       9.0 +/-    0.69  0.030 / 0.030
G08     48.1           36.7                5.5 +/-    0.97       8.5 +/-    0.97  0.030 / 0.030
G09     176.7          31.3                8.2 +/-    1.22      14.0 +/-    1.22  0.030 / 0.030
G11     114.2          37.0                8.1 +/-    0.79      12.4 +/-    0.79  0.090 / 0.330
G13     320.2          14.4                5.4 +/-    2.55      13.7 +/-    2.55  0.140 / 0.440
G17     200.5          17.7                7.9 +/-    1.26      18.4 +/-    1.26  0.100 / 0.200
G18     100.5          18.1                8.1 +/-    1.44      18.8 +/-    1.44  0.130 / 0.210
G28     281.3          54.5                6.9 +/-    2.95       8.3 +/-    2.95  0.140 / 0.220
G30     335.9          62.7                7.1 +/-    0.46       7.9 +/-    0.46  0.220 / 0.270