PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-21:58:00
G01     106.6          25.4               15.0 +/-    1.20      29.0 +/-    1.20  0.030 / 0.030
G07     110.0          53.4               12.7 +/-    1.10      15.4 +/-    1.10  0.030 / 0.040
G08     41.6           18.6                8.8 +/-    2.20      20.1 +/-    2.20  0.140 / 0.160
G09     175.1          14.2               13.4 +/-    2.02      34.0 +/-    2.02  0.140 / 0.170
G11     86.5           42.7               13.4 +/-    1.48      18.7 +/-    1.48  0.070 / 0.140
G13     309.1          29.4               12.0 +/-    1.15      21.4 +/-    1.15  0.090 / 0.110
G17     204.7          39.7               15.6 +/-    0.78      22.9 +/-    0.78  0.080 / 0.040
G18     76.8           23.4               11.2 +/-    1.77      22.7 +/-    1.77  0.090 / 0.050
G28     310.8          59.6               10.9 +/-    0.99      12.4 +/-    0.99  0.190 / 0.150
G30     25.9           78.4               12.3 +/-    1.17      12.5 +/-    1.17  0.120 / 0.180