PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-22:43:00
G07     359.5          65.1                9.7 +/-    0.62      10.6 +/-    0.62  0.110 / 0.140
G08     76.7           50.7               10.0 +/-    0.48      12.5 +/-    0.48  0.130 / 0.110
G09     181.9          61.8               10.9 +/-    1.09      12.2 +/-    1.09  0.030 / 0.040
G11     136.9          21.1               11.2 +/-    2.56      24.0 +/-    2.56  0.030 / 0.040
G23     159.2          32.4               10.4 +/-    0.69      17.4 +/-    0.69  0.060 / 0.250
G27     48.0           27.4                7.6 +/-    2.36      14.1 +/-    2.36  0.070 / 0.080
G28     245.3          34.9               12.1 +/-    2.38      19.3 +/-    2.38  0.040 / 0.040
G30     310.2          42.1                9.7 +/-    0.89      13.6 +/-    0.89  0.040 / 0.040