PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-16:57:40
G02     225.6          66.0                9.1 +/-    1.00       9.9 +/-    1.00  0.060 / 0.090
G06     44.4           63.9                8.6 +/-    0.41       9.5 +/-    0.41  0.050 / 0.080
G12     322.2          48.9                8.5 +/-    1.05      10.9 +/-    1.05  0.030 / 0.060
G17     65.2           25.9                8.1 +/-    0.92      15.6 +/-    0.92  0.040 / 0.060
G19     45.7           46.4                7.6 +/-    0.86      10.1 +/-    0.86  0.030 / 0.040
G24     251.9          38.7               10.4 +/-    0.58      15.5 +/-    0.58  0.030 / 0.040