PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-15:57:40
G01     224.3          15.7               11.7 +/-    4.44      28.7 +/-    4.44  0.400 / 0.230
G03     273.8          71.4               12.1 +/-    0.43      12.7 +/-    0.43  0.160 / 0.230
G14     88.6           22.1                8.3 +/-    1.80      17.3 +/-    1.80  0.060 / 0.070
G16     151.7          43.7                3.5 +/-   14.27       4.8 +/-   14.27  0.040 / 0.060
G22     203.4          67.0               11.1 +/-    0.47      11.9 +/-    0.47  0.090 / 0.250
G23     308.3          38.0                9.9 +/-    1.32      14.9 +/-    1.32  0.090 / 0.240
G26     101.1          55.7               12.2 +/-    1.25      14.4 +/-    1.25  0.030 / 0.030
G31     45.6           32.4                9.4 +/-    1.24      15.7 +/-    1.24  0.040 / 0.030