PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-00:13:10
G02     27.2           60.4               10.4 +/-    0.78      11.7 +/-    0.78  0.030 / 0.020
G05     146.4          56.8               13.6 +/-    0.56      16.0 +/-    0.56  0.030 / 0.020
G06     50.6           20.1                9.9 +/-    1.89      21.8 +/-    1.89  0.040 / 0.040
G12     208.5          74.2               13.0 +/-    0.22      13.5 +/-    0.22  0.030 / 0.040
G19     94.2           15.2               11.9 +/-    2.31      29.4 +/-    2.31  0.110 / 0.190
G25     305.6          48.2               11.0 +/-    2.54      14.2 +/-    2.54  0.130 / 0.180
G29     302.3          22.4               11.3 +/-    1.32      23.5 +/-    1.32  0.100 / 0.080