PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-22:42:50
G02     210.9          53.9               16.7 +/-    0.60      20.1 +/-    0.60  0.110 / 0.130
G06     98.7           80.5               13.5 +/-    0.63      13.7 +/-    0.63  0.080 / 0.140
G12     314.9          27.3                9.0 +/-    1.94      16.6 +/-    1.94  0.070 / 0.070
G17     51.7           36.2               11.0 +/-    1.36      17.0 +/-    1.36  0.060 / 0.070
G19     31.0           53.4               11.9 +/-    1.15      14.4 +/-    1.15  0.080 / 0.180
G24     273.4          42.6               14.6 +/-    2.75      20.4 +/-    2.75  0.080 / 0.180
G28     116.1          22.7               15.3 +/-    0.90      31.5 +/-    0.90  0.030 / 0.030