PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-18:12:50
G01     91.8           30.9               13.0 +/-    0.76      22.3 +/-    0.76  0.050 / 0.050
G07     124.7          40.9               13.8 +/-    0.88      19.8 +/-    0.88  0.050 / 0.050
G11     69.5           40.5               12.2 +/-    1.55      17.7 +/-    1.55  0.040 / 0.060
G13     296.1          36.3               13.8 +/-    3.60      21.4 +/-    3.60  0.040 / 0.070
G17     212.2          51.5               15.0 +/-    0.84      18.6 +/-    0.84  0.040 / 0.080
G18     63.9           23.4               11.5 +/-    1.70      23.3 +/-    1.70  0.050 / 0.080
G19     213.0          25.9               13.2 +/-    2.20      25.3 +/-    2.20  0.070 / 0.120
G28     334.6          61.4               12.3 +/-    0.66      13.8 +/-    0.66  0.080 / 0.130
G30     103.0          75.1               14.1 +/-    0.20      14.5 +/-    0.20  0.090 / 0.180