PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-04:57:40
G01     94.6           29.2                8.6 +/-    1.42      15.3 +/-    1.42  0.030 / 0.020
G07     119.0          50.7                8.2 +/-    0.86      10.3 +/-    0.86  0.030 / 0.030
G08     41.7           12.1                2.1 +/-    2.64       5.6 +/-    2.64  0.330 / 0.280
G11     79.4           44.7                8.2 +/-    1.16      11.1 +/-    1.16  0.160 / 0.340
G13     300.2          35.2                6.6 +/-    1.80      10.4 +/-    1.80  0.060 / 0.050
G17     209.0          47.6                8.4 +/-    0.57      10.9 +/-    0.57  0.050 / 0.050
G19     210.8          23.7                7.8 +/-    1.56      15.7 +/-    1.56  0.050 / 0.040
G28     319.0          59.7                5.7 +/-    0.87       6.5 +/-    0.87  0.050 / 0.060
G30     55.1           81.5                6.6 +/-    0.66       6.6 +/-    0.66  0.040 / 0.060