PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-15:27:50
G01     234.5          25.3               10.3 +/-    1.73      20.0 +/-    1.73  0.130 / 0.210
G03     305.2          62.7                9.9 +/-    0.96      11.1 +/-    0.96  0.130 / 0.260
G14     76.5           30.3                8.9 +/-    1.19      15.4 +/-    1.19  0.060 / 0.140
G18     207.5          13.7               11.5 +/-    1.84      29.5 +/-    1.84  0.080 / 0.140
G22     242.7          76.6               11.0 +/-    0.49      11.2 +/-    0.49  0.030 / 0.040
G23     298.4          28.8                8.3 +/-    1.64      14.9 +/-    1.64  0.030 / 0.040
G26     123.9          49.4               11.8 +/-    1.50      15.0 +/-    1.50  0.040 / 0.030
G31     41.4           44.6                9.0 +/-    1.27      12.2 +/-    1.27  0.030 / 0.030
G32     88.8           16.5                8.8 +/-    1.20      21.2 +/-    1.20  0.220 / 0.360