PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-15:57:50
G01     224.3          15.7               11.5 +/-    1.30      28.0 +/-    1.30  0.040 / 0.040
G03     273.8          71.4               11.5 +/-    0.56      12.0 +/-    0.56  0.030 / 0.060
G14     88.6           22.1                8.0 +/-    1.37      16.8 +/-    1.37  0.140 / 0.240
G16     151.7          43.7               14.1 +/-    1.18      19.4 +/-    1.18  0.130 / 0.200
G22     203.4          67.0               11.4 +/-    1.31      12.3 +/-    1.31  0.030 / 0.050
G23     308.3          38.0                8.6 +/-    0.80      12.9 +/-    0.80  0.030 / 0.040
G26     101.1          55.7               11.5 +/-    0.93      13.6 +/-    0.93  0.040 / 0.070
G31     45.6           32.4                8.7 +/-    0.49      14.5 +/-    0.49  0.040 / 0.090