PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/19-23:27:50
G01     104.8          26.3               10.4 +/-    1.33      19.8 +/-    1.33  0.030 / 0.040
G07     112.1          52.6               10.2 +/-    0.33      12.5 +/-    0.33  0.030 / 0.030
G08     41.4           16.7                7.1 +/-    1.79      17.0 +/-    1.79  0.070 / 0.110
G09     174.5          12.2               12.1 +/-    3.25      32.1 +/-    3.25  0.070 / 0.110
G11     83.8           42.6               10.3 +/-    0.84      14.4 +/-    0.84  0.040 / 0.050
G13     307.7          30.5                9.7 +/-    1.16      16.7 +/-    1.16  0.050 / 0.060
G17     205.4          42.0               10.1 +/-    0.85      14.3 +/-    0.85  0.280 / 0.350
G18     74.2           23.4                8.0 +/-    1.36      16.2 +/-    1.36  0.270 / 0.340
G28     315.1          60.2                7.9 +/-    0.79       9.0 +/-    0.79  0.250 / 0.190
G30     31.9           79.1                8.8 +/-    0.99       8.9 +/-    0.99  0.400 / 0.160