PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-10:28:00
G02     316.2          81.9                5.3 +/-    0.49       5.3 +/-    0.49  0.080 / 0.100
G05     167.7          26.6                7.1 +/-    1.29      13.4 +/-    1.29  0.100 / 0.090
G06     38.8           52.2                5.3 +/-    0.66       6.5 +/-    0.66  0.140 / 0.150
G12     318.4          62.5                4.7 +/-    0.61       5.3 +/-    0.61  0.130 / 0.240
G17     81.4           14.4                5.4 +/-    1.51      13.7 +/-    1.51  0.020 / 0.030
G19     69.8           30.3                5.3 +/-    1.99       9.2 +/-    1.99  0.030 / 0.030
G24     235.3          27.7                6.1 +/-    1.17      11.2 +/-    1.17  0.040 / 0.060
G25     317.9          23.1                3.9 +/-    1.57       7.9 +/-    1.57  0.040 / 0.030