PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-14:57:40
G01     247.3          34.1               10.7 +/-    1.72      17.2 +/-    1.72  0.080 / 0.110
G03     315.3          50.0                7.5 +/-    1.28       9.5 +/-    1.28  0.100 / 0.100
G14     63.6           38.4                7.9 +/-    1.30      11.8 +/-    1.30  0.050 / 0.080
G18     215.8          24.1                9.5 +/-    2.43      19.0 +/-    2.43  0.050 / 0.080
G22     296.2          72.0                8.3 +/-    0.25       8.7 +/-    0.25  0.050 / 0.060
G23     288.4          20.4                8.8 +/-    2.04      19.2 +/-    2.04  0.060 / 0.060
G26     139.0          38.9               10.7 +/-    1.03      15.9 +/-    1.03  0.030 / 0.040
G31     40.5           57.9                8.0 +/-    0.57       9.3 +/-    0.57  0.040 / 0.030
G32     77.5           24.8                8.5 +/-    1.15      16.6 +/-    1.15  0.110 / 0.310