PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-19:27:50
G02     241.1          75.0               10.3 +/-    0.47      10.6 +/-    0.47  0.060 / 0.120
G05     171.4          16.1               12.2 +/-    2.24      29.5 +/-    2.24  0.090 / 0.140
G06     40.4           59.0                9.3 +/-    0.49      10.6 +/-    0.49  0.170 / 0.470
G12     320.9          49.6                7.6 +/-    0.70       9.7 +/-    0.70  0.170 / 0.360
G17     69.3           24.0                8.8 +/-    0.59      17.7 +/-    0.59  0.030 / 0.040
G19     57.2           37.7                8.3 +/-    0.55      12.6 +/-    0.55  0.040 / 0.040
G24     245.6          34.8               11.3 +/-    0.95      18.0 +/-    0.95  0.040 / 0.060
G25     316.2          11.4               -2.1 +/-   38.90      -5.6 +/-   38.90  0.040 / 0.060