PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-21:42:50
G01     107.8          24.7               13.9 +/-    1.52      27.3 +/-    1.52  0.050 / 0.040
G07     108.4          54.2               13.4 +/-    0.81      16.1 +/-    0.81  0.030 / 0.040
G08     41.7           19.7                9.4 +/-    2.38      20.8 +/-    2.38  0.080 / 0.160
G09     175.4          15.4               13.1 +/-    1.78      32.2 +/-    1.78  0.090 / 0.150
G11     88.2           42.8               13.2 +/-    0.63      18.4 +/-    0.63  0.060 / 0.130
G13     310.1          28.7                9.6 +/-    0.95      17.3 +/-    0.95  0.070 / 0.150
G17     204.3          38.3               14.0 +/-    0.95      20.9 +/-    0.95  0.050 / 0.080
G18     78.3           23.3               11.1 +/-    1.44      22.6 +/-    1.44  0.050 / 0.050
G28     308.3          59.2               11.4 +/-    1.30      13.0 +/-    1.30  0.030 / 0.020
G30     20.7           77.8               13.0 +/-    0.66      13.2 +/-    0.66  0.030 / 0.020