PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-01:27:40
G02     33.2           55.5               11.1 +/-    0.86      13.1 +/-    0.86  0.030 / 0.040
G05     137.6          61.8               13.8 +/-    0.80      15.4 +/-    0.80  0.030 / 0.040
G06     53.5           16.1                8.6 +/-    1.67      20.9 +/-    1.67  0.030 / 0.040
G12     199.6          68.7               13.7 +/-    0.49      14.6 +/-    0.49  0.030 / 0.030
G19     98.9           11.5               11.7 +/-    3.37      31.5 +/-    3.37  0.200 / 0.220
G25     299.1          52.2               11.8 +/-    2.04      14.5 +/-    2.04  0.140 / 0.230
G29     306.3          26.6               10.7 +/-    1.10      20.2 +/-    1.10  0.060 / 0.050