PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-19:27:50
G01     59.8           30.2               11.6 +/-    1.12      20.2 +/-    1.12  0.040 / 0.040
G07     141.4          16.6               14.1 +/-    0.82      33.9 +/-    0.82  0.050 / 0.040
G11     47.7           23.3                9.7 +/-    1.71      19.6 +/-    1.71  0.100 / 0.160
G13     261.7          36.0               14.1 +/-    1.20      21.9 +/-    1.20  0.070 / 0.160
G15     293.2          16.6                9.4 +/-    1.60      22.4 +/-    1.60  0.030 / 0.050
G17     257.1          76.6               14.2 +/-    0.30      14.5 +/-    0.30  0.040 / 0.050
G18     41.1           11.7               10.7 +/-    1.76      28.6 +/-    1.76  0.080 / 0.120
G19     231.7          51.1               14.6 +/-    2.16      18.1 +/-    2.16  0.060 / 0.120
G28     27.1           59.0               10.9 +/-    0.59      12.5 +/-    0.59  0.210 / 0.480
G30     143.2          50.1               14.3 +/-    0.75      18.1 +/-    0.75  0.200 / 0.370