PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-14:57:50
G03     194.7          38.7               10.1 +/-    1.94      15.0 +/-    1.94  0.060 / 0.120
G07     273.2          30.8               11.0 +/-    1.19      18.9 +/-    1.19  0.060 / 0.130
G08     154.4          11.0               -0.3 +/-   35.41      -0.9 +/-   35.41  0.080 / 0.070
G09     316.8          40.9               10.7 +/-    0.46      15.3 +/-    0.46  0.060 / 0.080
G16     63.7           60.7               11.3 +/-    1.02      12.7 +/-    1.02  0.090 / 0.180
G22     180.9          22.1                8.2 +/-    2.48      17.2 +/-    2.48  0.120 / 0.190
G23     351.5          74.5               10.0 +/-    1.29      10.3 +/-    1.29  0.090 / 0.150
G26     45.6           32.0                8.8 +/-    1.67      14.9 +/-    1.67  0.100 / 0.140
G27     123.1          21.0               10.7 +/-    1.89      22.9 +/-    1.89  0.030 / 0.030