PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-23:27:50
G02     90.2           9.3                10.7 +/-    2.93      30.3 +/-    2.93  0.180 / 0.170
G05     46.3           24.3                8.7 +/-    2.64      17.3 +/-    2.64  0.100 / 0.080
G13     87.4           35.8               10.8 +/-    1.00      16.8 +/-    1.00  0.070 / 0.090
G15     139.3          45.0               12.4 +/-    0.37      16.7 +/-    0.37  0.070 / 0.090
G20     237.9          14.7               12.7 +/-    1.51      31.8 +/-    1.51  0.180 / 0.380
G21     304.2          40.5               11.4 +/-    1.17      16.5 +/-    1.17  0.310 / 0.380
G25     203.7          17.9               13.4 +/-    4.66      31.0 +/-    4.66  0.070 / 0.100
G26     295.2          20.9               11.0 +/-    0.67      23.6 +/-    0.67  0.080 / 0.100
G29     140.5          83.8               10.3 +/-    0.60      10.4 +/-    0.60  0.040 / 0.050