PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-03:57:50
G02     286.5          82.2                5.5 +/-    0.80       5.5 +/-    0.80  0.030 / 0.030
G05     167.7          23.9                6.6 +/-    2.51      13.1 +/-    2.51  0.030 / 0.030
G06     39.6           52.1                4.6 +/-    0.66       5.6 +/-    0.66  0.130 / 0.140
G12     320.3          58.7                5.7 +/-    0.66       6.5 +/-    0.66  0.090 / 0.150
G17     76.2           20.1                4.4 +/-    2.06       9.6 +/-    2.06  0.080 / 0.090
G19     64.8           34.0                4.5 +/-    2.41       7.2 +/-    2.41  0.080 / 0.140
G24     238.2          30.3                7.1 +/-    2.27      12.3 +/-    2.27  0.040 / 0.040
G25     317.7          18.1                4.8 +/-    2.62      11.0 +/-    2.62  0.040 / 0.040