PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-05:57:50
G01     70.6           31.9                4.3 +/-    0.60       7.2 +/-    0.60  0.030 / 0.030
G07     135.9          32.6                9.0 +/-    0.96      15.0 +/-    0.96  0.030 / 0.030
G11     56.4           35.4                4.3 +/-    0.94       6.8 +/-    0.94  0.070 / 0.110
G13     275.3          39.0                9.9 +/-    0.94      14.7 +/-    0.94  0.070 / 0.110
G15     302.1          15.9                2.5 +/-    2.04       6.0 +/-    2.04  0.080 / 0.360
G17     228.2          67.7                9.9 +/-    1.30      10.6 +/-    1.30  0.100 / 0.330
G19     221.7          42.7                9.8 +/-    0.79      13.7 +/-    0.79  0.060 / 0.070
G28     358.7          61.5                5.4 +/-    0.58       6.1 +/-    0.58  0.060 / 0.070
G30     133.8          67.6                8.5 +/-    1.00       9.1 +/-    1.00  0.040 / 0.060