PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-17:57:40
G01     224.0          15.3                9.7 +/-    4.00      24.0 +/-    4.00  0.030 / 0.060
G03     275.7          70.5                8.8 +/-    0.85       9.2 +/-    0.85  0.040 / 0.060
G14     89.1           21.7                8.9 +/-    1.57      18.8 +/-    1.57  0.120 / 0.190
G16     149.2          45.3               10.4 +/-    1.01      13.9 +/-    1.01  0.110 / 0.250
G22     206.4          67.3               11.1 +/-    0.76      11.9 +/-    0.76  0.130 / 0.250
G23     308.4          37.8                9.6 +/-    2.54      14.5 +/-    2.54  0.190 / 0.460
G26     102.8          56.3               10.1 +/-    0.40      11.8 +/-    0.40  0.030 / 0.030
G31     45.3           33.3                7.5 +/-    1.07      12.3 +/-    1.07  0.040 / 0.040