PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-19:42:30
G02     228.1          69.7               10.8 +/-    1.16      11.5 +/-    1.16  0.070 / 0.120
G05     173.8          10.9                3.8 +/-   35.93      10.3 +/-   35.93  0.080 / 0.150
G06     43.4           65.5               10.8 +/-    0.37      11.7 +/-    0.37  0.140 / 0.450
G12     320.1          43.3               12.3 +/-    1.50      17.0 +/-    1.50  0.160 / 0.430
G17     64.3           27.4                8.4 +/-    0.87      15.5 +/-    0.87  0.040 / 0.060
G19     50.9           41.7                9.0 +/-    0.70      12.7 +/-    0.70  0.030 / 0.040
G24     252.5          37.9               13.9 +/-    1.29      21.0 +/-    1.29  0.060 / 0.070
G28     127.5          10.9               10.9 +/-    3.30      29.8 +/-    3.30  0.050 / 0.070