PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-01:57:30
G02     227.0          70.4              -21.2 +/-    0.51     -22.4 +/-    0.51  0.060 / 0.090
G05     173.9          10.5               -7.2 +/-   11.26     -19.9 +/-   11.26  0.070 / 0.090
G06     44.6           70.8                3.5 +/-    0.77       3.7 +/-    0.77  0.030 / 0.050
G12     319.9          42.0                4.6 +/-    0.87       6.5 +/-    0.87  0.040 / 0.060
G17     65.5           25.2                4.5 +/-    1.62       8.8 +/-    1.62  0.250 / 0.520
G19     49.1           43.3                4.2 +/-    1.55       5.8 +/-    1.55  0.360 / 0.450
G24     251.0          38.4                6.1 +/-    1.80       9.2 +/-    1.80  0.040 / 0.060
G28     127.4          10.0                5.3 +/-    1.96      14.8 +/-    1.96  0.050 / 0.050