PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/25-23:27:40
G01     92.3           31.0                9.2 +/-    1.44      15.7 +/-    1.44  0.040 / 0.060
G07     124.3          43.0               10.2 +/-    0.61      14.2 +/-    0.61  0.030 / 0.060
G11     69.1           39.9                7.5 +/-    1.07      10.9 +/-    1.07  0.070 / 0.110
G13     296.5          36.0                9.7 +/-    2.64      15.1 +/-    2.64  0.070 / 0.090
G17     211.8          53.7               10.7 +/-    0.47      12.9 +/-    0.47  0.070 / 0.040
G18     62.4           22.6                8.0 +/-    0.89      16.5 +/-    0.89  0.070 / 0.050
G19     213.3          24.6               10.1 +/-    2.14      19.9 +/-    2.14  0.230 / 0.280
G28     337.4          61.6                7.7 +/-    0.37       8.6 +/-    0.37  0.120 / 0.290
G30     96.3           77.6                8.5 +/-    0.60       8.7 +/-    0.60  0.090 / 0.180