PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-15:58:10
G01     68.0           32.1                9.9 +/-    1.39      16.7 +/-    1.39  0.040 / 0.060
G07     137.9          25.2               10.8 +/-    1.71      21.0 +/-    1.71  0.040 / 0.040
G11     52.0           29.8                8.6 +/-    0.90      15.2 +/-    0.90  0.110 / 0.140
G13     271.2          38.2               10.2 +/-    1.94      15.3 +/-    1.94  0.080 / 0.140
G15     300.6          15.7                7.2 +/-    1.42      17.5 +/-    1.42  0.060 / 0.100
G17     233.9          68.5               11.9 +/-    0.71      12.7 +/-    0.71  0.050 / 0.150
G18     46.7           16.7                8.4 +/-    2.15      20.1 +/-    2.15  0.030 / 0.040
G19     224.6          44.7               13.0 +/-    1.61      17.6 +/-    1.61  0.030 / 0.040
G28     11.3           60.7               10.2 +/-    1.31      11.5 +/-    1.31  0.090 / 0.130
G30     137.2          57.7               11.5 +/-    0.46      13.3 +/-    0.46  0.090 / 0.120