PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-19:43:00
G07     129.3          35.8               13.9 +/-    0.77      21.7 +/-    0.77  0.050 / 0.090
G11     63.0           37.7               11.3 +/-    1.27      17.1 +/-    1.27  0.050 / 0.080
G13     289.4          37.8               14.8 +/-    1.63      22.4 +/-    1.63  0.040 / 0.040
G15     312.0          12.0                9.9 +/-    1.12      26.3 +/-    1.12  0.040 / 0.050
G17     216.5          57.9               14.4 +/-    1.40      16.7 +/-    1.40  0.030 / 0.030
G18     57.9           21.9               10.3 +/-    2.16      21.7 +/-    2.16  0.030 / 0.030
G19     215.7          30.9               15.3 +/-    2.43      26.3 +/-    2.43  0.160 / 0.240
G28     346.7          61.7                9.9 +/-    0.63      11.0 +/-    0.63  0.100 / 0.130
G30     117.3          71.4               12.4 +/-    0.96      13.0 +/-    0.96  0.100 / 0.180