PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-00:43:10
G02     258.7          79.6                9.4 +/-    0.34       9.5 +/-    0.34  0.080 / 0.100
G05     169.4          20.1               10.7 +/-    1.27      23.5 +/-    1.27  0.100 / 0.130
G06     39.0           58.1                8.1 +/-    0.50       9.3 +/-    0.50  0.070 / 0.080
G12     320.7          52.9                8.2 +/-    1.33      10.0 +/-    1.33  0.060 / 0.060
G17     74.1           19.2                8.0 +/-    1.87      18.0 +/-    1.87  0.510 / 0.360
G19     60.6           36.0                8.9 +/-    1.33      13.9 +/-    1.33  0.340 / 0.310
G24     239.8          32.3               10.7 +/-    1.29      17.8 +/-    1.29  0.060 / 0.040
G25     316.9          16.4                5.6 +/-    1.94      13.5 +/-    1.94  0.060 / 0.040