PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-00:57:40
G10     251.3          27.3               13.1 +/-    1.95      24.3 +/-    1.95  0.040 / 0.040
G13     52.8           29.4                9.1 +/-    2.27      16.2 +/-    2.27  0.040 / 0.040
G15     88.2           58.5               11.6 +/-    0.69      13.3 +/-    0.69  0.100 / 0.180
G16     293.5          15.8                8.7 +/-    1.22      21.2 +/-    1.22  0.100 / 0.140
G20     262.6          39.2               15.6 +/-    3.23      23.0 +/-    3.23  0.100 / 0.250
G21     333.5          60.1               10.4 +/-    0.48      11.8 +/-    0.48  0.100 / 0.200
G26     265.5          15.4               12.8 +/-    1.14      31.5 +/-    1.14  0.040 / 0.030
G29     165.5          50.1               12.5 +/-    0.64      15.7 +/-    0.64  0.030 / 0.030