PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-22:57:40
G01     128.8          10.3               -4.6 +/-   39.90     -12.8 +/-   39.90  0.120 / 0.100
G07     44.7           69.8                9.4 +/-    0.57      10.0 +/-    0.57  0.110 / 0.080
G08     53.9           43.7                9.0 +/-    0.95      12.4 +/-    0.95  0.260 / 0.310
G09     179.4          39.5               10.3 +/-    1.44      15.1 +/-    1.44  0.180 / 0.280
G11     124.2          33.2               11.5 +/-    1.55      18.9 +/-    1.55  0.040 / 0.040
G17     200.4          11.1               -2.1 +/-   23.51      -5.7 +/-   23.51  0.070 / 0.060
G28     273.7          52.2                9.8 +/-    2.77      12.1 +/-    2.77  0.190 / 0.320
G30     336.1          61.8                8.3 +/-    0.44       9.3 +/-    0.44  0.110 / 0.240