PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-13:12:30
G01     91.8           31.4                7.1 +/-    0.79      12.2 +/-    0.79  0.020 / 0.030
G07     124.2          46.6                8.2 +/-    0.95      10.8 +/-    0.95  0.030 / 0.030
G11     69.2           39.7                6.5 +/-    1.52       9.5 +/-    1.52  0.040 / 0.040
G13     295.9          35.8                6.9 +/-    3.03      10.8 +/-    3.03  0.030 / 0.040
G17     213.1          53.3               10.2 +/-    0.91      12.3 +/-    0.91  0.080 / 0.100
G18     64.7           23.8                6.5 +/-    0.88      13.1 +/-    0.88  0.080 / 0.100
G19     214.2          22.6                6.6 +/-    2.69      13.7 +/-    2.69  0.090 / 0.090
G28     345.8          61.8                6.1 +/-    0.65       6.8 +/-    0.65  0.090 / 0.090
G30     94.8           78.4                7.7 +/-    0.53       7.9 +/-    0.53  0.060 / 0.120