PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-22:27:40
G01     40.9           16.3               10.5 +/-    3.08      25.2 +/-    3.08  0.310 / 0.370
G06     177.3          35.7               14.8 +/-    1.24      23.3 +/-    1.24  0.190 / 0.400
G13     237.1          22.7               14.6 +/-    1.72      30.1 +/-    1.72  0.040 / 0.060
G15     270.4          12.4               11.3 +/-    3.36      30.0 +/-    3.36  0.040 / 0.060
G17     3.9            70.2               11.6 +/-    0.24      12.2 +/-    0.24  0.030 / 0.040
G19     275.5          69.0               12.4 +/-    0.57      13.1 +/-    0.57  0.040 / 0.040
G24     316.1          20.1                6.8 +/-    3.10      15.0 +/-    3.10  0.080 / 0.210
G28     66.7           50.1               11.8 +/-    0.84      14.9 +/-    0.84  0.140 / 0.250
G30     154.1          26.9               16.0 +/-    0.77      29.9 +/-    0.77  0.070 / 0.130