PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-16:57:50
G01     48.5           24.2                8.5 +/-    1.44      16.9 +/-    1.44  0.040 / 0.050
G06     177.4          25.4               12.6 +/-    1.64      24.3 +/-    1.64  0.050 / 0.060
G11     44.2           14.2                8.5 +/-    1.02      21.5 +/-    1.02  0.110 / 0.370
G13     248.2          30.4               13.4 +/-    1.70      23.3 +/-    1.70  0.120 / 0.370
G15     282.0          15.6               10.2 +/-    1.07      24.9 +/-    1.07  0.100 / 0.130
G17     310.1          78.4               11.8 +/-    0.43      12.1 +/-    0.43  0.130 / 0.150
G19     248.2          61.9               11.5 +/-    0.55      12.9 +/-    0.55  0.030 / 0.020
G28     46.2           55.9               11.1 +/-    0.89      13.1 +/-    0.89  0.030 / 0.030
G30     149.6          37.7               11.8 +/-    1.54      17.9 +/-    1.54  0.050 / 0.040