PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-15:28:00
G01     234.5          25.3               10.9 +/-    2.27      21.1 +/-    2.27  0.030 / 0.040
G03     305.2          62.7                8.6 +/-    0.50       9.5 +/-    0.50  0.030 / 0.030
G14     76.5           30.3                8.8 +/-    0.87      15.3 +/-    0.87  0.080 / 0.140
G16     159.7          30.1               11.2 +/-    2.60      19.6 +/-    2.60  0.080 / 0.170
G18     207.5          13.7                9.5 +/-    2.49      24.3 +/-    2.49  0.040 / 0.050
G22     242.7          76.6               10.7 +/-    0.63      10.9 +/-    0.63  0.040 / 0.060
G23     298.4          28.8                6.6 +/-    2.20      11.9 +/-    2.20  0.080 / 0.140
G26     123.9          49.4               10.9 +/-    1.12      13.8 +/-    1.12  0.080 / 0.140
G31     41.4           44.6                8.0 +/-    0.84      10.8 +/-    0.84  0.080 / 0.180
G32     88.8           16.5                8.6 +/-    2.21      20.7 +/-    2.21  0.070 / 0.160