PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-23:28:10
G02     217.9          63.5               12.1 +/-    1.11      13.3 +/-    1.11  0.040 / 0.080
G06     52.4           71.9               10.9 +/-    0.53      11.4 +/-    0.53  0.040 / 0.080
G12     319.4          38.5               10.1 +/-    0.92      15.0 +/-    0.92  0.060 / 0.080
G17     57.2           33.9                9.5 +/-    0.33      15.3 +/-    0.33  0.060 / 0.090
G19     40.8           48.6               10.8 +/-    0.76      13.9 +/-    0.76  0.110 / 0.400
G24     262.1          41.0               13.4 +/-    1.71      19.2 +/-    1.71  0.090 / 0.420
G28     124.3          11.6               11.5 +/-    1.55      30.9 +/-    1.55  0.040 / 0.050