PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-17:43:00
G02     202.6          30.7               12.8 +/-    1.87      22.1 +/-    1.87  0.070 / 0.130
G06     163.1          65.6               12.3 +/-    0.45      13.3 +/-    0.45  0.070 / 0.140
G12     304.8          11.5                4.7 +/-   16.71      12.6 +/-   16.71  0.030 / 0.060
G17     30.9           53.1                9.8 +/-    0.75      11.9 +/-    0.75  0.030 / 0.060
G19     357.2          66.6               11.1 +/-    0.54      11.9 +/-    0.54  0.160 / 0.330
G24     300.9          36.3               23.3 +/-    2.18      36.1 +/-    2.18  0.140 / 0.350
G28     96.2           38.0               11.6 +/-    0.45      17.4 +/-    0.45  0.070 / 0.120