PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-16:58:00
G02     313.2          80.0                8.9 +/-    0.97       9.0 +/-    0.97  0.060 / 0.100
G05     166.1          30.7               11.5 +/-    1.00      19.8 +/-    1.00  0.060 / 0.100
G06     41.7           40.1                7.5 +/-    0.61      10.9 +/-    0.61  0.150 / 0.220
G12     313.1          74.5                9.2 +/-    0.37       9.5 +/-    0.37  0.170 / 0.210
G17     85.0           11.1                9.5 +/-    2.05      26.0 +/-    2.05  0.040 / 0.030
G19     70.6           31.8                9.5 +/-    0.73      16.1 +/-    0.73  0.050 / 0.030
G24     228.3          23.8               11.5 +/-    2.18      23.2 +/-    2.18  0.040 / 0.060
G25     317.4          27.7                5.7 +/-    1.89      10.5 +/-    1.89  0.050 / 0.060